Year Persons 2001-01-01 19525 2002-01-01 21350 2003-01-01 23900 2004-01-01 25700 2005-01-01 24025 2006-01-01 22600 2007-01-01 20325 2008-01-01 19025 2009-01-01 27675 2010-01-01 31450 2011-01-01 27750 2012-01-01 27000 2013-01-01 27525 2014-01-01 29025 2015-01-01 28325 2016-01-01 29000 2017-01-01 27625